US Bridges

SR 99-I 99 over SR 150-PA 150

Fair

Centre County, Pennsylvania · 6 MI N. of State College · Structure no. 000000000041175

Built
2001
24 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
245 ft
1 main span
Daily traffic
11,057
2024 count
Owner
State
State Highway Agency

About this bridge

SR 99-I 99 over SR 150-PA 150 is a steel stringer/multi-beam or girder carrying SR 99-I 99 over SR 150-PA 150 in Centre County, Pennsylvania. It was built in 2001, so it is 24 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 11,057 vehicles a day, roughly 15% of them trucks, projected to reach 12,362 by 2043. The structure is 245 ft (74.7 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 99-I 99
CrossesSR 150-PA 150
Location6 MI N. of State College
RouteInterstate 99
CountyCentre County
StatePennsylvania
Coordinates40.87251, -77.77861
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length245 ft (74.7 m)
Longest span240 ft (73.2 m)
Deck width55 ft (16.8 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,057 (2024)
Projected traffic12,362 by 2043
Trucks15%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 99-I 99 over SR 150-PA 150 built?

It was built in 2001, making it 24 years old in 2025.

What condition is SR 99-I 99 over SR 150-PA 150 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does SR 99-I 99 over SR 150-PA 150 carry?

About 11,057 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is SR 99-I 99 over SR 150-PA 150?

The structure is 245 ft (74.7 m) long with a longest span of 240 ft (73.2 m) and a deck 55 ft wide.

Who owns SR 99-I 99 over SR 150-PA 150?

It is owned by the State Highway Agency.